JPH0658025A - Lock/unlock confirming device - Google Patents

Abstract

PURPOSE:To provide a locking/unlocking device which does not use any battery, is resistant against vibration, being highly reliable and can be used free from maintenance semi-permanently. CONSTITUTION:A knob 2 of a key 1 is provided with a transparent display element accommodation box 5 having a bulkhead 5a, and rotary magnets 7, 7' as display element having a pair of columnar magnetic poles magnetized in the diametric direction are encapsulated rotatably in display element accommodation chambers 6, 6', respectively. When the rotary magnet 7 is positioned so that the S-pole faces the key tip, the other rotary magnet 7' in the accommodation chamber 6' is also positioned so that the S-pole faces the key tip. In this positioning, the left half is colored for example green while the right half is colored red. A pair of first drive magnets N1, N3 and a pair of drive magnets S4, S2 are mounted inside of the cap 10 of the cylinder 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a locking / unlocking confirmation device for automatically storing a history of locking / unlocking a lock with a key.

[0002]

2. Description of the Related Art FIG. 5 is an exploded perspective view of a conventional locking / unlocking confirmation device a. A first reed switch e having a first bias magnet d ₁ attached to _one side end c ₁ of the knob c of the key b.
₁ is provided, and the second bias magnet d is provided at the other side end c ₂ .
₂ second reed switch e ₂ is provided which is clamped by the first
The B pole of the bias magnet d ₁ is oriented in the key insertion direction, and the S pole of the second bias magnet d ₂ is oriented in the key removal direction. At the front end of the cylinder body f, a pair of first drive magnets n ₁ and n ₃ with the N pole facing the surface are located at the positions of 1:30 and 7:30 of the holder g at the positions of 5:30 and 10:30. A pair of second drive magnets with the S pole facing the surface
₄ , s ₂ are furnished.

When the first reed switch e ₁ passes near the first drive magnet n ₁ or n ₃ immediately before key removal during operation of the key counterclockwise (hereinafter referred to as CCW) in the locking stroke, The contact of the 1-reed switch e ₁ is closed, the contact is kept closed even after the key b is removed from the cylinder body f, and the contact is opened when passing near the second drive magnets s ₄ and s _2. The magnetic flux density of the first bias magnet d ₁ is urged to such an extent that the contacts continue to open even after b is removed from the cylinder body f.

When the second reed switch e ₂ passes near the second drive magnet s ₄ or s ₂ immediately before key removal during operation of the key clockwise (hereinafter referred to as CW) in the unlocking process, The contact of the two reed switch e ₂ is closed, and the contact is kept closed even after the key b is removed from the cylinder body f, and when passing near the first drive magnet n ₁ or n ₃ , the second reed switch e ₂ The contact is opened and the key b
The magnetic flux density of the second bias magnet d ₂ is urged to such an extent that the contact continues to be opened even after it is removed from the cylinder body f (Japanese Patent Laid-Open No. 63-75264).

FIG. 6 is a view of the holder g as viewed from the front and shows how the drive magnets are arranged. (A) shows the arrangement of a drive magnet of a type (hereinafter referred to as 18 type) in which the key is inserted into the cylinder and then rotated (180 ° CCW or CW) to lock (unlock) and pull out the key. further,
After inserting the key into the cylinder, rotate it to about 45 ° C CW or CW to lock (unlock), then return to about 45 ° CW or CCW and pull out the key at the original position (hereinafter referred to as 45 type)
It also shows the arrangement of the drive magnets, and can be applied to a key having symmetrical cuts on both sides of the key stem.

(B) 360 ° C. after inserting the key into the cylinder
The state of arrangement of a drive magnet of a type (hereinafter referred to as 36 type) in which the key is pulled out by locking (unlocking) by rotating to CW or CW is shown. The first drive magnet n ₁ and the second drive magnet s ₂ are arranged on the X axis. This drive magnet arrangement pattern can also be applied to a type (hereinafter referred to as type 72) in which the key is inserted into the cylinder and then rotated (720 ° CCW or CW) to lock (unlock) and pull out the key.

Since the conventional locking / unlocking confirmation device is constructed as described above, its operation will be described. That is, in the locking process, the first reed switch e ₁ and the second reed switch e ₂ are respectively connected to the first drive magnets n ₁ and n.
Pass over ₃ . At this time, the first reed switch e ₁ is also closed after sampling the first contact of the reed switch e ₁ applied Ai is the same direction of the magnetic field lines and magnetic field lines of the bias magnets d ₁ of the first drive magnet n ₁ is closed key to continue.

The second reed switch e ₂ has a magnetic field line in the opposite direction of the first drive magnet n ₃ and a bias magnet d.
The magnetic lines of force ₂ cancel each other out, and the contact of the second reed switch e ₂ is opened and continues to be opened even after the key is removed. That is, this key b
Thus, the fact that the cylinder body f (lock) is locked is memorized by closing the contact of the first reed switch e ₁ .
In the unlocking process, the first reed switch e ₁ and the second reed switch e ₂ are respectively connected to the second drive magnet s.
Pass over ₂ , s ₄ . At this time, the second reed switch e ₂ also closes after withdrawal of the second drive magnet s the same direction of the magnetic lines of force and the bias magnet d ₂ of the magnetic lines of force is exerted Ai second contact of the reed switch e ₂ of ₄ closed key to continue. In the first reed switch e _1, the opposite magnetic force lines of the second drive magnet s ₂ and the magnetic force lines of the bias magnet d ₁ are canceled, the contact point of the first reed switch e ₁ is opened and continues to be opened even after the key is removed.

That is, with this key b, the cylinder body f
The fact that the (lock) has been unlocked is stored by closing the contact of the second reed switch e ₂ . In the conventional locking / unlocking confirmation device, the history of the locking / unlocking operation is regarded as the history of the rotation direction and stored by using the hysteresis of the reed switch equipped with the bias magnet. Therefore, the holding force with which the contact of the reed switch keeps closing or the holding force that keeps opening is made up of a delicate balance force due to the hysteresis of the reed switch by the drive magnet and the bias magnet, and its range and holding force are naturally limited. .

Therefore, if the key of the conventional example is inadvertently dropped on the concrete floor while being carried, the contact that was originally closed may be opened due to the impact force applied to the contact of the reed switch. Although it is a locking / unlocking confirmation device because the contact that was originally opened is closed, it has a serious drawback that it gives an erroneous display. Therefore, since the purpose of this product is to confirm security, incorrect display due to impact is a serious obstacle to practical use. In addition, when you want to check the locking and unlocking by connecting the battery and LED to the above reed switch,
Since it is configured to light, a battery is essential,
Although it depends on the frequency of use, it has to be replaced in about one year, which is a troublesome drawback.

[0011]

SUMMARY OF THE INVENTION In view of the above points, the present invention provides a locking / unlocking confirmation device that does not use a battery, is highly resistant to vibration and highly reliable, and can be used semi-permanently and maintenance-free. The purpose is to do.

[0012]

To achieve the above object, in the present invention, a cylinder lock and a key for operating the cylinder of the cylinder lock are provided, and either the front surface of the cylinder or the vicinity of the front surface of the cylinder is provided. A drive magnet composed of a permanent magnet is arranged, and a rotary magnet composed of a permanent magnet composed of a rotating body having a pair of magnetic poles is rotated adjacent to each other with a slight gap therebetween. A plurality of rotary magnets are provided side by side, and a rotary magnet at one end of the plurality of rotary magnets is provided so as to face the drive magnet, and a specific magnetic pole of the rotary magnet has a different pole from the specific magnetic pole of the end rotary magnet. The magnetic poles of the are colored as a rotary magnet so that the facing state can be identified, and used as a protective member that covers the key knob. A viewing window for the rotary magnet is formed, while the drive magnet sets a specific magnetic pole in the vicinity of the locus through which the rotary magnet at the end passes in the latter half of the locking operation by key operation, and the drive magnet in the latter half of the unlocking operation. A locking / unlocking confirmation device in which the specific magnetic pole and a magnetic pole having a different polarity are set in the vicinity of a locus through which a terminal rotary magnet passes, and the terminal rotary magnet is provided at least in the latter half of the locking step in at least the locking step of key operation. At the time of finally passing the vicinity of the drive magnet having the specific magnetic pole, the specific magnetic pole of the drive magnet and the magnetic pole having a different polarity and the different magnetic pole of the end rotary magnet are attracted and face each other, and Drive adjacent to the same pole as the specific pole of the end rotary magnet The specific magnetic pole and the magnetic pole of the different polarity of the magnet are attracted to face each other, and after the key is extracted from the cylinder, the facing magnetic poles of the rotary magnet adjacent to the end drive magnet are attracted to each other, A configuration is adopted in which the rotary magnets hold their mutual attraction postures and the mutual attraction postures of the rotary magnets can be visually recognized. Furthermore, a configuration is adopted in which the plurality of rotary magnets are enclosed in a capsule-shaped display body accommodating box made of transparent plastic with a gap.

[0013]

In the locking / unlocking confirmation device according to the present invention, the drive magnet made of a permanent magnet is arranged on either the front surface of the cylinder or in the vicinity of the front surface of the cylinder, and the permanent magnet is made of a rotating body having a pair of magnetic poles on the key knob. A plurality of rotary magnets adjacent to each other are rotatably provided side by side with a slight gap therebetween, and a rotary magnet at one end of the plurality of rotary magnets is provided to face the drive magnet. The specific magnetic pole of the drive magnet is colored so that the state where the specific magnetic pole of the end rotary magnet and the magnetic pole of a different polarity face each other can be discriminated, and a protective member for covering the knob of the key is provided for the rotary magnet. A viewing window is formed, while the drive magnet is used in the latter half of the locking process by key operation. It sets a specific pole in the vicinity of the trajectory rotary magnet of the terminal passes,
In the latter half of the unlocking process, since the magnetic poles having different polarities and the specific magnetic poles are set in the vicinity of the locus through which the terminal rotary magnet passes, the terminal rotary magnet is set to the specific magnetic pole in the latter half of the locking process of the key operation. When the magnetic pole finally passes through the vicinity of the drive magnet, the specific magnetic pole of the drive magnet and the specific magnetic pole of the rotary magnet at the end and the different magnetic pole are attracted to each other and face each other. The specific magnetic pole of the rotary magnet and the magnetic pole having the same pole as the specific magnetic pole of the adjacent drive magnet and the magnetic pole of the different polarity are attracted and face each other, and after the key is extracted from the cylinder, the drive magnet is adjacent to the end drive magnet. The magnetic poles facing each other of the rotary magnet are attracted to each other so that they are adjacent to the rotary magnet at the end. Rotary magnet which retains its mutual aspiration attitude.

When it becomes uncertain whether the key user has locked the key, it is confirmed from the viewing window that the mutual attraction postures of the magnetic poles facing each other of the rotary magnet are color-coded to lock the key. I can.

[0015]

1 is a perspective view of a first embodiment of a locking / unlocking confirmation device according to the present invention. That is, a concave portion 4 is formed from the cylinder 3 at the side end 2a of the knob 2 of the key 1 made of a non-magnetic material, and the concave portion 4 has a hollow rectangular parallelepiped shape formed of transparent plastic having a partition wall 5a. The display body housing box 5 is provided. The display body storage box 5 is divided into front and rear by the partition wall 5a to provide display body storage chambers 6 and 6 ', and the upper side plate is detachably formed.

In the display body storage chambers 6 and 6'of the display body storage box 5, there are provided rotary magnets 7 which are permanent magnets having a pair of diametrically magnetized cylindrical magnetic poles.
7'is rotatably and airtightly enclosed, and the rotary magnet 7 of the display body accommodation chamber 6 near the cylinder 3
Is the position where the S magnetic pole is directed in the key tip direction, and the S magnetic pole of the rotary magnet 7'in the display body accommodation chamber 6'is also directed in the key tip direction (see FIG. 2). Rotary magnet 7,
7'is the above position, for example, the left half is colored green and the right half is colored red.

The knob 2 of the key 1 is sandwiched by a protective member made of synthetic resin having a viewing window (not shown) (on the left side) formed at a position corresponding to the rotary magnets 7 and 7 '. There is. The cylinder 3 is provided with a cylinder cap 10 made of a non-magnetic material on a cylinder body 8 having a lock case mounting screw 9 and a lock case fixing recess 9a (not shown) formed at one end thereof. A key guide 11 having a key hole 11a is rotatably provided on the cylinder cap 10. A hollow disk-shaped retainer 12 made of a non-magnetic material holds the key guide 11 and is fixed to the cylinder cap 10 (see FIG. 2).

The retainer 12 has a pair of first drive magnets N ₁ and N ₃ at a position of 1:30 when viewed from the front of N ₁ , a position of N ₃ at a position of 7:30, and a pair of first drive magnets. 2 Drive magnets S ₄ and S ₂ move S ₄ to the position at 4:30
The S ₂ is mounted at 10:30. Therefore, the arrangement pattern of the drive magnets is the same as that of the conventional example of FIG.

Since the present invention is constructed as described above, the side end 2a of the knob 2 of the key 1 is inserted into the cylinder 3 at the 6 o'clock position when viewed from the front for locking, and the CCW at 12 o'clock. It is assumed that the lock operation is performed up to the position. When the rotary magnet 7 approaches the first drive magnet N ₁ in the latter half of the locking process, the S magnetic pole of the rotary magnet 7 is attracted and opposed by the first drive magnet N _1, and the S magnetic pole of the rotary magnet 7'is a rotary magnet. N of 7
It is attracted to the magnetic pole and faces the N magnetic pole of the rotary magnet 7 (see FIG. 2).

Even after the key 1 is removed, the N magnetic pole of the rotary magnet 7 and the S magnetic pole of the rotary magnet 7'are attracted to each other and hold their mutual positions. Therefore,
When confirming the locking / unlocking, if the rotary magnets 7 and 7'are viewed from the viewing window, the green of the rotary magnets 7 and 7'can be seen on the viewing window side and it can be confirmed that the locking has been performed.

For unlocking, the side end 2a of the knob 2 of the key 1 is inserted into the cylinder 3 at the 12 o'clock position when viewed from the front, and the CW
It is assumed that the unlocking operation is performed up to the 6 o'clock position. When the rotary magnet 7 approaches the second drive magnet S ₄ in the latter half of the unlocking process, the N magnetic pole of the rotary magnet 7 is attracted and opposed by the second drive magnet S _4, and the N magnetic pole of the rotary magnet 7'is It is attracted by the S magnetic pole of the rotary magnet 7 and faces the S magnetic pole of the rotary magnet 7. Even after removing key 1.
The S magnetic pole of the rotary magnet 7 and the N magnetic pole of the rotary magnet 7'are attracted to each other and maintain their mutual postures. Therefore, when it is desired to check the locking / unlocking, when the rotary magnets 7 and 7'are viewed from the viewing window, the red of the rotary magnets 7 and 7'can be seen on the viewing window side, and it can be confirmed that the locks have been unlocked.

FIG. 3 is a sectional view of a key portion of the second embodiment according to the present invention. That is, a recess 24 is formed in the cylinder at the side end 22a of the knob 22 of the key 21 made of a non-magnetic material, and the recess 24 is made of a hollow capsule-shaped rectangular parallelepiped formed of transparent plastic having a partition wall 25a. A display body housing box 25 is provided. Display box 25
Is divided into front and rear by a partition wall 25a, and the display body accommodation chamber 2
6, 26 'are provided, and the upper plate is detachably formed. In the display body storage chambers 26, 26 ′ of the display body storage box 25, there are provided rotary magnets 27, which are display bodies made of permanent magnets having a pair of diametrically magnetized spherical magnetic poles.
27 'are rotatably and airtightly sealed, and the N-pole of the rotary magnet 27 and the rotary magnet 27' are located at a position where the S-pole of the rotary magnet 27 of the display body accommodation chamber 26 near the cylinder is directed toward the key tip. The S magnetic poles are attracted to each other and the S magnetic poles of the rotary magnet 27 'in the display housing 26' are also oriented in the key tip direction (see FIG. 3).

Rotary magnets 27 and 2 as display bodies
7'is the above position, for example, the left half is colored green and the right half is colored red. The other configurations are the same as those in the first embodiment, and the description thereof will be omitted. Therefore, the operation is similar to that of the first embodiment, and the description thereof is omitted. Figure 4
FIG. 8 is a sectional view of a key portion of a third embodiment according to the present invention.
That is, the side end 32 of the knob 32 of the key 31 made of a non-magnetic material
The concave portion 34 is formed from the cylinder a.
In addition, a display body accommodating box 35 formed of a transparent plastic and having a partition wall 35a and made of a hollow capsule-like rectangular parallelepiped.
Is provided. The display body housing box 35 is divided into front and rear by a partition wall 35a to provide display body housing chambers 36 and 36 ', and the upper side plate is detachably formed.

Display body storage chambers 36 and 3 of the display body storage box 35
In 6 ', rotary magnets 37, 37', which are display members made of permanent magnets having a pair of diametrically magnetized disk-shaped magnetic poles, are rotatably and airtightly enclosed.
At the position where the rotary magnet 37 of the display body accommodating chamber 36 near the cylinder has the S magnetic pole directed in the key tip direction, the N magnetic pole of the rotary magnet 37 and the rotary magnet 3
The S magnetic pole of 7'is attracted to each other, and the display body accommodating chamber 36 '
Also in the rotary magnet 27 ', the S magnetic pole is oriented in the key tip direction (see FIG. 3). The rotary magnets 37, 37 ', which are display bodies, are colored in the above positions, for example, the lower half is colored green and the upper half is colored red. The viewing window corresponds to the lower half of the rotary magnets 37, 37'. Has been formed.

The other structure is the same as that of the first embodiment, and the description thereof is omitted. Therefore, the operation is similar to that of the first embodiment, and the description thereof is omitted. However, in the third embodiment, since the rotary magnet is flat, there is an advantage that the key knob portion is designed to be thinner. The first and second
In the embodiment, the axis of rotation of the rotary magnet is configured to be parallel to the surface of the knob, but it may be configured to intersect with the surface of the knob (in this case,
The drive magnet is either protruding from the front of the cylinder or protruding, or provided on the escutcheon in correspondence with the rotary magnet).

Further, in the first, second and third embodiments,
Although the rotary magnet is rotatably enclosed in the display body storage chamber, it may be rotatably supported. However, in any case, it is an essential requirement to provide a slight gap between the rotary magnets. If the rotary magnets are placed in close contact with each other, it is impossible to reverse the attraction of the rotary magnets by overcoming the attraction due to the mutual magnetic force of the rotary magnets even if operated by a considerably strong drive magnet. is there.

In the first, second, and third embodiments, even if the key is shocked while being carried, the rotary magnets are attracted to each other with strong magnetic force, so that the keys are reversed to the opposite attraction state. There is nothing. That is, although the adsorbed state may be separated by a slight vibration momentarily, the restoring force based on the mutual attractive force does not cause the malfunction to return to the immediately preceding normal adsorbed state. Further, in the above embodiment, two rotary magnets are provided, but two or more rotary magnets may be provided to further improve the position holding force of the rotary magnet when being carried. Next, the arrangement pattern of the drive magnets will be described. The embodiment according to the present invention uses a 180 degree CCW from the position where the key is inserted in the cylinder.
Alternatively, an example is adopted in which a cylinder is attached to a so-called 18-type lock that performs a locking or unlocking operation by rotating a key on the CW.

Therefore, basically, the first drive magnet N ₁ at 1:30 and the second drive magnet S ₄ at 4:30
It is enough, but once you unlock it with your key,
If someone at home locks from inside with a thumb turn,
The phases are out of phase. That is, until now, the side end 2a of the key knob has been set to the 12 o'clock position and the key has been inserted and removed, but the key can now be inserted and removed at the 6 o'clock position. However, in any case, the CCW is the locking operation and the CW is the unlocking operation.

For the above reason, as shown in FIG.
An 8-inch drive magnet arrangement pattern is necessary.
Also, in the world, a so-called 36-type cylinder that is used to lock or unlock the key by rotating the key 360 degrees CCW or from the position where the key is inserted into the cylinder is widely used. When the cylinder is attached to the drive magnet, a drive magnet may be provided as shown in FIG.

Further, there is a return type, which is, for example, 45 from the position where the key is inserted in the cylinder to the CCW.
Rotate once again and return to CW 45 degrees to remove and lock the key. From the position where the key was inserted into the cylinder, rotate to CW for example 45 degrees and return to CCW 45 degrees to remove and unlock the key. It is a so-called type 45 for performing. In this case, if the lock is fitted with a cylinder, it is basically the first half of 1:30.
Only the drive magnet N ₁ and the second drive magnet S ₂ at 10:30 are sufficient.

However, in this type, like a car key,
There is one in which the key cuts on the left and right are symmetrical, in pursuit of convenience at the expense of security. In this case, since the phase shifts similarly to the 18-inch type, a drive magnet may be provided as shown in FIG. 6 (a). For operating angles less than 45 degrees,
Therefore, the drive magnet may be arranged directly below the rotary magnet at the position where the operating angle is limited.

Further, in the present embodiment, the drive magnet is housed inside the cylinder cap, but when it is attached to a ready-made cylinder, it may be attached to the front surface of the cylinder, and the drive magnet is provided on the escutcheon. A rotary magnet may be provided at a corresponding position on the knob of the key corresponding to the magnet. Depending on the lock case, there are cylinders for which the hand is not determined until it is attached to the door on the site. In this case, for example, in the right hand, it was locked by CCW key operation. The key is operated to lock it. Therefore, when the right-handed hand was used, green was visible on the viewing window, but when it was attached to the left-handed door, red was visible, which is a problem. Therefore, in the first embodiment, the viewing windows are provided on the left and right sides, and in the third embodiment, the viewing windows are provided on the upper and lower sides, respectively. Also, the key is usually carried in a pocket of clothes, but if cotton dust or lint or water drops adhere to the rotary magnet section, its rotation is hindered and an erroneous display is displayed. Cause. Therefore, encapsulating a rotary magnet is an essential requirement for maintaining reliability for many years. Further, although the capsule-shaped display body accommodating box has a rectangular parallelepiped shape in the present embodiment, the cross section may be formed in a figure eight shape.

[0033]

As described above, according to the present invention, since the rotary magnet, which is the display body, is composed of the rotating body without using the battery, the torque which causes the asymmetrical erroneous display even when a shock is applied is generated. Since it does not occur, it strongly attracts each other with the adjacent rotary magnets and maintains its posture, so even if vibration is applied while carrying the key, the restoring force based on the mutual attractive force acts and attracts it. The posture does not change, and there is no false display. Therefore, the lock / unlock confirmation device according to the present invention has an excellent effect that it is resistant to vibration, extremely reliable, and can be used semipermanently without maintenance.

[Brief description of drawings]

FIG. 1 is a perspective view of a first embodiment of a locking / unlocking confirmation device according to the present invention.

FIG. 2 is a sectional view of the cylinder just before the key is inserted and the lock operation is performed immediately before the key is removed.

FIG. 3 is a sectional view of a key according to a second embodiment of the present invention.

FIG. 4 is a sectional view of a key according to a third embodiment of the present invention.

FIG. 5 is a perspective view of a conventional locking / unlocking confirmation device.

FIG. 6A is a front view of an arrangement pattern of drive magnets of a conventional 18 and 45 type cylinder.
(B) is a front view of the arrangement pattern of the drive magnets of the conventional 36-inch cylinder.

[Explanation of symbols]

N ₁ , N ₃ 1st drive magnet S ₂ , S ₄ 2nd drive magnet 1 Key 2 Knob 2a Side end 3 Cylinder 4 Recessed 5, 25, 35 Display body storage box 5a, 25a, 35a Partition wall 6, 6 ', 26 , 26 ', 36, 36' Indicator housing chamber 7, 7 ', 27, 27', 37, 37 'Rotary magnet 8 Cylinder body 9 Screw 10 Cylinder cap 11 Key guide 12 Retainer

Claims (2)

[Claims] 1. A cylinder lock and a key for operating a cylinder of the cylinder lock. A drive magnet, which is a permanent magnet, is provided on either the front surface of the cylinder or in the vicinity of the front surface of the cylinder, and a knob of the key is provided. A plurality of rotary magnets each composed of a permanent magnet composed of a rotating body having a pair of magnetic poles are rotatably provided side by side adjacent to each other with a slight gap, and the rotary magnet at one end of the plurality of rotary magnets. Is provided so as to face the drive magnet, the specific magnetic pole of the rotary magnet, the specific magnetic pole of the end rotary magnet and a magnetic pole having a different polarity, the rotary magnet is colored so that the facing state can be determined, A viewing window for the rotary magnet is formed on a protective member that covers the key knob, and The magnet sets a specific magnetic pole in the vicinity of the path through which the terminal rotary magnet passes in the latter half of the locking process by key operation, and in the vicinity of the path through which the terminal rotary magnet passes in the latter half of the unlocking process. A locking / unlocking confirmation device in which a specific magnetic pole and a magnetic pole having a different polarity are set, and in at least the locking stroke of a key operation, the rotary magnet at the end of the lock magnet moves in the vicinity of the drive magnet of the specific magnetic pole in the latter half of the locking stroke. At the time of the final passage, a specific magnetic pole of the drive magnet is attracted to the specific magnetic pole of the rotary magnet at the end, and a magnetic pole having a different polarity is opposed to the specific magnetic pole of the drive magnet. To the magnetic pole of the drive magnet, the magnetic pole having a different polarity from the specific magnetic pole of the adjacent drive magnet is attracted and faces the After removing from the cylinder,
The opposite magnetic poles of the rotary magnet adjacent to the terminal drive magnet and the facing magnetic poles attract each other, so that the rotary magnets hold their mutual attraction postures and the mutual attraction postures of the rotary magnets can be visually recognized. A locking / unlocking confirmation device characterized in that 2. The locking / unlocking confirmation device according to claim 1, wherein the plurality of rotary magnets are enclosed in a capsule-shaped display body accommodating box made of transparent plastic with a gap.